Who Pays at the BNA: Costs for Tenants in Portugal

Landlord termination, protection & eviction (BNA) 2 min read · published September 11, 2025

If you are facing a request at the National Tenancy Desk (BNA) in Portugal, it is normal to ask who bears the related costs. Tenants and landlords may be responsible for different expenses, such as administrative fees, court costs, necessary repairs and possible deposit retentions. This guide simply explains the types of costs that may arise, when a tenant can be charged and what evidence to collect to challenge improper charges. It includes practical steps to submit a request or defense at the BNA, important deadlines and where to find the official forms to protect your rights as a tenant in Portugal.

What a BNA request may include

A BNA request can involve several categories of costs. Knowing how to identify each helps you understand whether a charge is fair or should be disputed.

  • Administrative and processing fees (fees) — amounts charged by the agency or for administrative services.
  • Judicial or processing expenses (court) — costs and charges related to formal proceedings.
  • Necessary works or repairs (repair) — restoration costs for damage attributable to one of the parties.
  • Deposit retention or deductions (deposit) — amounts withheld at the end of a contract for damages or unpaid rent.
  • Submission and delivery of notices and forms (form) — costs associated with preparing and sending formal documents.
Keep all receipts and communications related to the request.

How to assess whether you should pay

Check the lease agreement and the notification you received. Always request a written breakdown of charges and collect evidence: photos, messages, receipts and maintenance reports. If the charge is based on works, ask for estimates or reports showing the origin of the damage. When in doubt about the legality of a demand, you can contest it at the BNA or in court, depending on the case and legal deadlines.[1]

Respond to notices within the indicated deadlines to avoid losing rights.

Frequently Asked Questions

Can the landlord charge all the startup costs of the request?
Not always; only charges provided for in the contract or by law can be charged, and the landlord must prove the necessity and amount of the expenses.
Can I contest deposit retentions via the BNA?
Yes, you can demand written justification and, if you disagree, file a complaint or claim for compensation at the BNA or in court.
Where can I get the official forms to submit a request?
Forms and templates are available on the official online services of the Ministry of Justice and on the BNA/BAS platforms.[2]

How-To

  1. Gather documentation: lease, receipts, photographs and communication between parties (evidence).
  2. Complete the appropriate BNA/BAS form available on official platforms (form).
  3. Submit the request within the legal deadlines and keep proof of submission (deadline).
  4. Attend any hearings or diligences if summoned and bring copies of your documents (court).
Clear and organized documentation makes the review of your request easier.

Key Takeaways

  • Not all expenses are automatically the tenant's responsibility.
  • Always request written proof and a breakdown of costs before paying.
  • Use official forms and meet deadlines to protect your rights.

Help and Support


  1. [1] DRE — Diário da República Eletrónico
  2. [2] CITIUS — Ministry of Justice platform
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Portugal

Bob writes and reviews tenant law content for various regions. They’re passionate about housing justice and simplifying legal protections for tenants everywhere.